Abstract: A Tuned Resonant Insert TRI (1), is disclosed for Non Destructive Testing (NDT) which eliminates the need for a couplant, either solid or liquids including demineralized water and oils. The TRI (1) applies a tip force on a uni-morph or bi-morph ceramic with a range of 0.03 lbf to 4.0 lbf. The frequency range is 1 kHz to 6 MHZ. The preferred material type for the tip is Ultem. The length and diameter of the tip is sized to achieve optimal tip acoustical resonance for use with specific material and can range from 0.620 to 1.200 inches for the length and 0.100 to 0.400 inches for the diameter. A probe housing will house at least one TRI (1) and, in different embodiments “n” TRI (1) units. Constant force tip contact minimizes acoustical impedance at the tip to material interface, allowing for increased sensitivity without the use of a couplant.